Datasheet

1997 Nov 25 16
Philips Semiconductors Product specification
Phase-locked-loop with VCO 74HC/HCT4046A
DC CHARACTERISTICS FOR 74HCT
VCO section
Voltages are referenced to GND (ground = 0 V)
Note
1. The parallel value of R1 and R2 should be more than 2.7 kΩ. Optimum performance is achieved when R1 and/or R2
are/is > 10 kΩ.
SYMBOL PARAMETER
T
amb
(°C)
UNIT
TEST CONDITIONS
74HCT
V
CC
(V)
V
I
OTHER
+25 −40 to +85 −40 to +125
min typ. max min max min. max.
V
IH
HIGH level
input voltage INH
2.0 1.6 2.0 2.0 V 4.5
to
5.5
V
IL
LOW level
input voltage INH
1.2 0.8 0.8 0.8 V 4.5
to
5.5
V
OH
HIGH level output
voltage VCO
OUT
4.4 4.5 4.4 4.4 V 4.5 V
IH
or
V
IL
−I
O
=20µA
V
OH
HIGH level output
voltage VCO
OUT
3.98 4.32 3.84 3.7 V 4.5 V
IH
or
V
IL
−I
O
= 4.0 mA
V
OL
LOW level output
voltage VCO
OUT
0 0.1 0.1 0.1 V 4.5 V
IH
or
V
IL
I
O
=20µA
V
OL
LOW level output
voltage VCO
OUT
0.15 0.26 0.33 0.4 V 4.5 V
IH
or
V
IL
I
O
= 4.0 mA
V
OL
LOW level output
voltage C1
A
,C1
B
(test purposes only)
0.40 0.47 0.54 V 4.5 V
IH
or
V
IL
I
O
= 4.0 mA
±I
I
input leakage
current
INH, VCO
IN
0.1 1.0 1.0 µA 5.5 V
CC
or
GND
R1 resistor range 3.0 300 kΩ 4.5 note 1
R
2
resistor range 3.0 300 kΩ 4.5 note 1
C1 capacitor range 40 no
limit
pF 4.5
V
VCOIN
operating voltage
range at VCO
IN
1.1 3.4 V 4.5 over the
range
specified for
R1; for
linearity see
Figs 20
and 21